The synthesis of the potent molluscicide cyanolide A has been achieved in 10 steps without the use of protecting groups. The synthesis features a key Sakurai macrocyclization/dimerization reaction that simultaneously forms both tetrahydropyran rings and the macrocycle of the natural product.
强效杀软体动物杀灭剂氰化物 A 的合成分 10 步完成,无需使用保护基团。该合成具有关键的樱井大环化/二聚化反应,可同时形成四氢吡喃环和天然产物的大环。
TMSBr/InBr<sub>3</sub>-promoted Prins cyclization/homobromination of dienyl alcohol with aldehyde to construct cis-THP containing an exocyclic E-alkene
作者:Linjie Li、Xianwei Sun、Yanyang He、Lu Gao、Zhenlei Song
DOI:10.1039/c5cc06270e
日期:——
A TMSBr/InBr3-promoted Prins cyclization/homobromination reaction of dienyl alcohol with aldehyde has been developed to construct a unique cis-E THP shown as the A ring in (−)-exiguolide and the B ring in bryostatins.